I've been looking at the 6K and 6KF and confirmed with Bendpak that neither are available any longer. They've been replaced with the 6LP and 6LPF (Flush mount). Evidently the platforms are larger. I think they also cost about $400 more than the units they replaced.
Rodger, I think that's probably it. When I bled the cylinders I was raising them to about half way then bleeding. Could be air in the lines that isn't pushing into the cylinder to escape. Between that and lower fluid level I'd bet that's it.
When I filled the resevoir with ATF it overflowed right at 7 quarts. I'll try adding another quart now that the lines / cylinders are full. I did notice that as I got the car fairly high in the air the pitch of the pump seemed to change. Not sure if that was air...
Clearly, they are not worried about that. This reminds me of when home builders would require people to enter lotteries for the "honor" of being able to pick a homesite. It's their product and they can do what they want with it and make customers jump through whatever hoops customers are...
TRex, hyping your product in the middle of a fiasco is an interesting marketing approach. A lot of people were planning to make a significant purchase, the plan blew up, and you thought today was a good day to hype the product even more knowing you had no answers for potential customers...